MC13156DW Freescale Semiconductor, MC13156DW Datasheet - Page 17

• Manufacturer Part Number: MC13156DW
• Manufacturer: Freescale Semiconductor

Specifications of MC13156DW

• Pin Count: 24
• Screening Level: Industrial
• Package Type: SOIC W
• Lead Free Status / Rohs Status: Supplier Unconfirmed

ARCHIVED BY FREESCALE SEMICONDUCTOR, INC. 2005
Description
function generator supplies a 100 kHz clock source to the bit
error rate tester. This device generates and receives a
repeating data pattern and drives a 5 pole baseband data
filter. The filter effectively reduces harmonic content of the
baseband data which is used to modulate the RF generator
which is running at 144.45 MHz. Following processing of the
signal by the receiver (MC13156), the recovered baseband
sinewave (data) is AC coupled to the data slicer. The data
slicer is essentially an auto–threshold comparator which
tracks the zero crossing of the incoming sinewave and
provides logic level data at its ouput. Data errors associated
with the recovered data are collected by the bit error rate
receiver and displayed.
bandwidth are shown in Figure 30. The bit error rate data was
taken under the following test conditions:
MOTOROLA WIRELESS SEMICONDUCTOR
SOLUTIONS – RF AND IF DEVICE DATA
Data rate = 100 kbps
Filter cutoff frequency set to 39% of the data rate or 39 kHz.
Filter type is a 5 pole equal–ripple with 0.5 phase error.
V CC = 4.0 Vdc
Frequency deviation = 32 kHz.
The test setup shown in Figure 31 is configured so that the
Bit error rate versus RF signal input level and IF filter
Function Generator
Wavetek Model No. 164
Clock
Out
Freescale Semiconductor, Inc.
For More Information On This Product,
BER TESTING AND PERFORMANCE
Figure 31. Bit Error Rate Test Setup
Clock
Input
Gen
Go to: www.freescale.com
Bit Error Rate Tester
HP3780A or Equivalent
Clock
Input
Rcr
MC13156
Data Slicer
Output
MC13156
Input
Data
Rcr
UUT
Evaluation PC Board
used across the entire useful frequency range of this device.
The center section of the board provides an area for
attaching all SMT components to the circuit side and radial
leaded components to the component ground side (see
Figures 32 and 33). Additionally, the peripheral area
surrounding the RF core provides pads to add supporting
and interface circuitry as a particular application dictates.
The evaluation PCB is very versatile and is intended to be
10 –1
10 –3
10 –5
10 –7
Generator
–90
Mixer
Input
Input
Bandpass
5 Pole
IF Filter BW
110 kHz
Filter
Input Signal Level and IF Bandpass Filter
Figure 30. Bit Error Rate versus RF
–85
RF INPUT SIGNAL LEVEL (dBm)
Modulation
Input
RF Generator
–80
V CC = 4.0 Vdc
Data Pattern = 2E09 Prbs NRZ
Baseband Filter f c = 50 kHz
f dev = 32 kHz
HP8640B
IF Filter BW
230 kHz
–75
Output
RF
17
–70